2mm Screws Washer Bike Chain Wheel Spacer Chainring Bolts Washer Bicycle Chainring Bolts Gasket

Label:Yes Thick 2MM:Size: 11.8mm*10*2mm Thin 1MM:Size: 12*10*1mm Packing list: 10PCS Screws Washer Quantity: 10pcs Material: Aluminum

Thin 1MM: Application: double disc to single disc For: If you have a two chainring chainring, you will need to change it to a single chainring. You will need to add a washer to the sprocket screw to secure the sprocket. Thick 2MM: For: When installing a single-disc disc with a double-disc screw, the male screw will be too long, so that the wrench cannot lock the nut, and the washer can solve this problem.